loop1: detected capacity change from 0 to 1024
==================================================================
BUG: KCSAN: data-race in pcpu_alloc_noprof / pcpu_block_update_hint_alloc

read-write to 0xffffffff88be03ac of 4 bytes by task 17347 on cpu 0:
 pcpu_update_empty_pages mm/percpu.c:602 [inline]
 pcpu_block_update_hint_alloc+0x5db/0x6a0 mm/percpu.c:923
 pcpu_alloc_area+0x488/0x4b0 mm/percpu.c:1258
 pcpu_alloc_noprof+0x4bb/0x10a0 mm/percpu.c:1834
 bpf_map_alloc_percpu+0xad/0x210 kernel/bpf/syscall.c:466
 bpf_array_alloc_percpu kernel/bpf/arraymap.c:38 [inline]
 array_map_alloc+0x2aa/0x390 kernel/bpf/arraymap.c:152
 map_create+0x850/0xb70 kernel/bpf/syscall.c:1341
 __sys_bpf+0x667/0x7a0 kernel/bpf/syscall.c:5635
 __do_sys_bpf kernel/bpf/syscall.c:5760 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:5758 [inline]
 __x64_sys_bpf+0x43/0x50 kernel/bpf/syscall.c:5758
 x64_sys_call+0x2625/0x2d60 arch/x86/include/generated/asm/syscalls_64.h:322
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xc9/0x1c0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

read to 0xffffffff88be03ac of 4 bytes by task 17344 on cpu 1:
 pcpu_alloc_noprof+0x9b6/0x10a0 mm/percpu.c:1894
 __percpu_counter_init_many+0x3e/0x1f0 lib/percpu_counter.c:198
 ext4_es_register_shrinker+0x152/0x280 fs/ext4/extents_status.c:1740
 __ext4_fill_super fs/ext4/super.c:5297 [inline]
 ext4_fill_super+0x23eb/0x3a10 fs/ext4/super.c:5686
 get_tree_bdev_flags+0x29f/0x310 fs/super.c:1636
 get_tree_bdev+0x1f/0x30 fs/super.c:1659
 ext4_get_tree+0x1c/0x30 fs/ext4/super.c:5718
 vfs_get_tree+0x56/0x1e0 fs/super.c:1814
 do_new_mount+0x227/0x690 fs/namespace.c:3507
 path_mount+0x49b/0xb30 fs/namespace.c:3834
 do_mount fs/namespace.c:3847 [inline]
 __do_sys_mount fs/namespace.c:4057 [inline]
 __se_sys_mount+0x27c/0x2d0 fs/namespace.c:4034
 __x64_sys_mount+0x67/0x80 fs/namespace.c:4034
 x64_sys_call+0x203e/0x2d60 arch/x86/include/generated/asm/syscalls_64.h:166
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xc9/0x1c0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

value changed: 0x00000004 -> 0xfffffffc

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 UID: 0 PID: 17344 Comm: syz.1.6446 Not tainted 6.12.0-rc6-syzkaller-00169-g906bd684e4b1 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
==================================================================
EXT4-fs (loop1): stripe (65535) is not aligned with cluster size (16), stripe is disabled
JBD2: no valid journal superblock found
EXT4-fs (loop1): Could not load journal inode